This week, I bought a new CPU/MoBo/Memory kit to replace my old Core I7 (prior to Sandy Bridge). The kit is described as:

Intel DX79SI Mobo

Core I7 3930K

Cooler Thermaltake CL-P0564

16Gb (4x4) Corsair XMS3 2000MHz (CMX8GX3M2A2000C9)

When I first tested the kit with my (mainly new) CoolerMaster PSU (RS-500-PCAR-D3 (500w)), everything went okay (well, from a Linux user point of view). But, when I plugged 4 HDDs, my PSU was not very kind to me. With 1 SSD, everything went fine. So, last friday I bought an

OCZ ZT Series (750w) PSU to this computer. I simply uninstallled the CM PSU an plugged in the OCZ PSU; just the CPU and ATX connectors (to see if everything is working).

At the very first boot, nothing worked; just the "standby" led on, RESET embed button green and POWER embed button red. Nothing else. I went back to my old PSU and the same behavior occurred. I changed the memory to a Kingston DDR3 1333MHz (as described in the troubleshotting), same thing. Either PSUs. I then went back to my old I7 and it worked with both PSUs. Even my AMD Bulldozer kit works flawless with those PSUs.

Well, I must ask: what am I missing here? There's some pictures below to show my "desperation".

Drop CMOS settings (remove battery for a minute), then connect old PSU. If system booting, enter the BIOS Setup and change option named 'Flash Update Sleep Delay', this option is for greater PSU compatibility. After this switch to new PSU & try to boot again (be sure to wait at least 20-30 seconds in first boot). If nothing helps, contact Intel support for RMA.